yeah it was very6 convoluted cause of two reasons the fact that prior to finding out about earth one he made up two persona's jay and zoom trick all of earth and then went and traveled in time for the time remanent ashe called it. and I was right about the "time Remanent" being an echo inthe time stream detail's here from the reverse flash returns episode. The show's Time Travel logic is stretched further than ever before to explain how a "temporal echo" of Eobard Thawne can still exist after his family tree was cut short. Nora's death being a fixed point in time is also a brand new supposition that could have saved everyone a lot of trouble last season. It does however explain how Future! Barry was still able to exist despite his entire timeline being changed and why he warned his other self not to save Nora. Not to mention, this episode freely makes use of both the Alternate Timeline and Stable Time Looptheory's. Despite being a relic from an erased timeline, Eobard's experiences in this episode are somehow part of a Stable Time Loop that sets into motion the events that lead to his timeline being erased in the first place. In conclusion. since so many others were confused by them adding this plot, the writers would have been better off not using time travel in the case of zoom's involvement. and his accomplice self. and they should have stayed to the alternate reality doppelganger deal instead. now Zoom stated he went back into time picked up his past self ( the latter which is what he calls a time Remanent) which was fallowing up on what set up in the episode of the reverse flash returns with eobard when earth dr. wells explained what a time remanent is. But for lot of people of the viewer audience that went over their head's. but this has shown in show's like continuum and terminator the sarah Conner chronicles. it just wasn't really named in continuum . In conclusion. since so many others were confused by them adding this plot the writers would have been better off not using time travel in the case of zoom and his accomplice self. and should have stayed to the alternate reality doppelganger deal Now the thing that becomes shifty here , as I said before is if his past shelf was killed then his present day self shouldn't exist his self any more. cause he killed him self in the past. but that has to do with another theory, in the time travel debate. which has to deal with alternate reality's time lines/ past history being different cause of the chose's made by that doppelganger. actually the real problem isn't length. the problem in actuality is 1)clear direction of where they want to go plot wise with their story. 2)and they may be adding in too many plots that don't always connect and /or aren't fleshed out from the start. which is why I'm worried about what will happen with the man in the iron mask turning out to be earth 2 wally cause there's alot they will have to explain there if they say it's earth Wally 2. they would have done a better service if the first trip to earth 2 was more then a 48 hour/ 2 days trip. and they added those versions of the characters back then instead of weird rush thing and it looks like from that stand point "oh it looks like we left some characters out and we might have fix that slight mistake." those are the thing's/problem at play kind like the whole iron heights meta human prison ward that was never used bu7t overly mentioned this season.